M.S. Ellis, F.B. Effah, Abdul-Rahman Ahmed, Jerry J. Kponyo, Javad Nourinia, Changiz Ghobadic and Bahman Mohammadic, "Asymmetric Circularly Polarized Open-Slot Antenna," International Journal of RF and Microwave Computer-Aided Engineering, DOI: 10.1002/mmce.22141 [SP 1]

M.S. Ellis, A.R. Ahmed, J.J. Kponyo, F.B. Effah, J. Nourinia, C. Ghobadic and B. Mohammadic, "Compact broadband circularly polarized printed antenna with a shifted monopole and modified ground plane," Journal of Instrumentation, vol. 14, no. 11, Nov. 2019, pp 11026-11026 [SP 2]

Mubarak Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, Bahman Mohammadi, "Simple circularly polarized planar monopole inverted T-shaped antenna," Microw. Opt. Technol. Lett. 2019; 1–6. [SP 3]

Joseph A.K Nsor, Abdul-Rahman Ahmed, Severin Azankpo, Eric Aggrey and Sani Ellis Mubarak, "Design and Implementation of Remote RFI Monitoring System for Ghana Radio Telescope Observatory-Nkutunse," American Journal of Electrical and Electronic Engineering, Vol. 7, No. 1, pp. 8-13, Apr. 2019. [SP 4]

Jerry John Kponyo, Kwasi Adu-Boahen Opare, Ahmed Abdul-Rahman, Justice Owusu Agyemang, "An intelligent Irrigation System for Rural Agriculture," International Journal of Applied Agricultural Sciences, vol. 5, no. 3, pp. 75-81, May 2019. [SP 13]

Mubarak Sani Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, Bahman Mohammadi, "Unidirectional Planar Monopole Antenna Using a Quasi-Radiator". IEEE Antennas and Wireless Propagation Letters. vol. 18, no. 1, pp. 157-161, Jan. 2019. [SP 6]

Dong-Hyun Lee, Abdul-Rahman Ahmed, and Kyung-Whan Yeom, "A Measurement of Noise Wave Correlation Matrix Using Noise Power Ratios," IEEE Transaction on Instrumentation &Measurement; vol. 68, no. 7, pp 2579-2593 Jul. 2019 [SP 5]

Mubarak Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo, Javad Nourinia, Changiz Ghobadi, B. Mohammadi, "Miniaturized printed monopole antenna with a linked ground plane and radiator," IET Electronics Letters, Volume 54, Issue 11, 31, pp. 676 – 678, May 2018. [SP 7]

Mubarak S. Ellis, Abdul-Rahman Ahmed and Jerry J. Kponyo, "Miniaturized Planar Monopole UWB Antenna with Integrated RFID/GPS/GSM/WLAN Bands using capacitively Loaded Loop Resonator (CLLRs)," International Journal of Wireless and Microwave Technologies, vol. 6, pp. 40-49, Nov. 2018. [SP 9]

Joseph A.K. Nsor, Abdul-Rahman Ahmed, Christopher K. Nyakey, and Prosper K. Ashilevi, "System Temperature Characterization of Nkutunse Receiver at 5GHz (Continuum) and 6.7GHz (Methanol Maser)", International Journal of Engineering Science and Technology, Vol. 10, No.04, pp. 164-171, Apr. 2018. [SP 8]

Mubarak S. Ellis, Jerry J. Kponyo, and Abdul-Rahman Ahmed, "A Compact Wideband Circularly Polarized L-Slot Antenna Edge-Fed by a Microstrip Feedline for C-Band Applications," Progress In Electromagnetics Research Letters, Vol. 65, 95–102, 2017. [SP 12]

Mubarak Sani Ellis, Abdul-Rahman Ahmed and Jerry John Kponyo, "A Circularly Polarized Planar Monopole Antenna with Wide AR Bandwidth Using a Novel Radiator/Ground Structure," Global Journal of Researches in Engineering: Electrical and Electronics Engineering, Volume 17, Issue 3 Version 1.0, 2017. [SP 10]

Joseph A.K Nsor, Abdul-Rahman Ahmed, Joyce Koranteng-Acquah, and Sani Ellis Mubarak, "Investigation of Potential RFI Threats to Yet to Be Deployed Ghana Radio Telescope Observatory-Nkutunse," International Journal of Engineering Research & Technology, Vol. 6 Issue 08, pp. 202-207, Aug. 2017. [SP 11]

J. Kponyo, K. Opare, N. S. Kenneth, A.-R. Ahmed and K. Koumadi, "An Ant Colony Optimization Solution to the Optimum Travel Path Determination Problem in VANETS: A NetLogo Modelling Approach", Proc. of MOBILITY 2015, Brussels, June 2015.

H. I. Frank, K. S. Nwizege, J. J. Kponyo, A.-R. Ahmed, H. Hamdoun, L. U. Akazua, " Efficient RFID Modulation Scheme for Better Ubiquitous Network Performance," . In: Proc. of IEEE UKSim-AMSS 18th International Conference on Computer Modelling and Simulation, UKSim2016, Cambridge, March, 25-27, 2015, pp. 594-600.

A.-R. Ahmed, Jerry Kponyo, Kwasi Opare, Nwizege S. Kenneth and Koudjo Koumadi. "Temperature Calibration of a Passive Eight-Port Network for Noise Parameters Measurement. In: Proc". of IEEE UKSim-AMSS 17th International Conference on Computer Modelling and Simulation, UKSim2015, Cambridge, March, 25-27, 2015, pp. 594-600.

J. Kponyo, K. Opare, N. S. Kenneth, A.-R. Ahmed, H. Hamdoun, L. U. Akazua, S. Alshehri, H. I. Frank, "A Distributed Intelligent Traffic System Using Ant Colony Optimization: A NetLogo Modeling Approach" In: Proc. of IEEE UKSim-AMSS 18th International Conference on Computer Modelling and Simulation, UKSim2016, Cambridge, March, 25-27, 2015, pp. 594-600.

A.-R. Ahmed, K. W. Yeom, "Noise Parameters Measurement Using an Eight-Port Network,"Proc. of Korea Institute of Communication and Information Sciences., Daejeon, 24th -25th May 2014.

A.-R. Ahmed, D.H. Lee, K. W. Yeom, "Simplified Calibration of Six-Port Network For Noise Parameters Measurement," Proc. of Korean Inst. of Electromagnetic Eng. and Science, Jeju Island, Aug. 2013.

H. C. Jeong, H. S. Oh, A.-R. Ahmed, K. W. Yeom, "Design of X-band 40W Pulse-Driven GaN HEMT Power Amplifier" Proc. of Asia–Pacific Microwave Conference, Kaohsiung, Dec. 2012.

O. Willie, A.-R. Ahmed, N. Emmanuel and B. O. Michael, "Incorporating Equatorial Environmental Conditions Into An Appropriate Technology" Proc. ASEE 2007, Honolulu, June 2007.